Use the cpuid instruction to generate the CPU brand string. And

content/browser/gpu/software_rendering_list.json

Index: content/browser/gpu/software_rendering_list.json
===================================================================
--- content/browser/gpu/software_rendering_list.json	(revision 160148)
+++ content/browser/gpu/software_rendering_list.json	(working copy)
@@ -36,19 +36,20 @@
 // 15. "machine_model" contais "name" and an optional "version".  "name" is a 
 //     STRING structure and "version" is a VERSION structure (defined below).
 // 16. "gpu_count" is a INT structure (defined below).
-// 17. "exceptions" is a list of entries.
-// 18. "blacklist" is a list of gpu feature strings, valid values include
+// 17  "cpu_info" is a STRING structure (defined below).
+// 18. "exceptions" is a list of entries.
+// 19. "blacklist" is a list of gpu feature strings, valid values include
 //     "accelerated_2d_canvas", "accelerated_compositing", "webgl",
 //     "multisampling", "flash_3d", "flash_stage3d", "texture_sharing",
 //     "accelerated_video_decode", and "all".
 //     This field is mandatory.
-// 19. "description" has the description of the entry.
-// 20. "webkit_bugs" is an array of associated webkit bug numbers.
-// 21. "cr_bugs" is an array of associated webkit bug numbers.
-// 22. "browser_version" is a VERSION structure (defined below).  If this
+// 20. "description" has the description of the entry.
+// 21. "webkit_bugs" is an array of associated webkit bug numbers.
+// 22. "cr_bugs" is an array of associated webkit bug numbers.
+// 23. "browser_version" is a VERSION structure (defined below).  If this
 //     condition is not satisfied, the entry will be ignored.  If it is not
 //     present, then the entry applies to all versions of the browser.
-// 23. "disabled" is a boolean. If it is present, the entry will be skipped.
+// 24. "disabled" is a boolean. If it is present, the entry will be skipped.
 //     This can not be used in exceptions.
 //
 // VERSION includes "op", "style", "number", and "number2".  "op" can be any of
@@ -73,7 +74,7 @@
 {
   "name": "software rendering list",
   // Please update the version number whenever you change this file.
-  "version": "3.6",
+  "version": "3.7",
   "entries": [
     {
       "id": 1,
@@ -473,6 +474,14 @@
         "op": "<",
         "value": "3.5"
       },
+      "exceptions": [
+        {
+          "cpu_info": {
+            "op": "contains",
+            "value": "Atom"
+          }
+        }
+      ],
       "blacklist": [
         "accelerated_2d_canvas"
       ]